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Service Availability of Virtual Machines in Cloud Computing
Published in Pankaj Bhambri, Sita Rani, Gaurav Gupta, Alex Khang, Cloud and Fog Computing Platforms for Internet of Things, 2022
Opeyemi Osanaiye, Steve Adeshina
Storage is another resource of the physical computers that is aggregated to a single virtualized storage to form a cloud storage. Storage virtualization has been deployed in advanced storage techniques, such as storage area network (SAN) and network-attached storage (NAS). Storage virtualization has ensured an enhanced process towards live migrating VM, where storage is being shared by the initiating and destination physical machines. In this instance, the disk storage will not be migrated with the server virtualization, therefore allowing the physical servers to be moved into a virtual environment. Recent physical servers can host more than one virtual server at a time, therefore the number of physical servers deployed is reduced. This in turn reduces the IT and maintenance expenditure. Finally, network virtualization creates a logical virtual network from the underling physical network consisting of switches, routers, and network interface card. Multiple virtual network components can be created from the physical network component and can be used for various purposes.
Management of Resources in Virtual Radio Networks
Published in Athanasios G. Kanatas, Konstantina S. Nikita, Panagiotis Mathiopoulos, New Directions in Wireless Communications Systems, 2017
Luis M. Correia, Luisa Caeiro, Filipe Cardoso
Network virtualization is an abstraction process aiming at separating the logical network functionalities from the underlying physical network resources. It enables the aggregation and provision of the network by combining different physical networks into a single virtual one, or splitting a physical network into multiple virtual ones, which are isolated from each other. Network virtualization has been introduced as a tool for large scale experimental networks, for example, PlanetLab [1] or GENI [2], but it is also proposed as an approach for the future Internet architecture and for the 5th-generation (5G) of mobile communications, [3–5]. By enabling a plurality of diverse network architectures to coexist on a shared physical substrate, virtualization mitigates the ossifying forces in the current architectures and allows the continuous development of innovative network technologies [6].
Building Virtual Networks for an Intent-Driven Campus Network
Published in Ningguo Shen, Bin Yu, Mingxiang Huang, Hailin Xu, Campus Network Architectures and Technologies, 2021
Ningguo Shen, Bin Yu, Mingxiang Huang, Hailin Xu
Commonly used traditional network virtualization technologies include virtual local area network (VLAN), virtual private network (VPN), stacking, clustering, and Super Virtual Fabric (SVF). Among these technologies, stacking, clustering, and SVF all virtualize multiple physical switches into one logical switch, integrating the control plane and achieving unified management. Strictly speaking, they are device-level virtualization technologies and cannot be used as independent protocols on campus networks. VLAN and VPN technologies, on the other hand, cannot meet the network virtualization requirements of intent-driven campus networks.
Efficient resource management techniques in cloud computing environment: a review and discussion
Published in International Journal of Computers and Applications, 2019
Frederic Nzanywayingoma, Yang Yang
Virtualization technique has become popular in IT industry as a software-based solution to build shared hardware infrastructures [21]. Virtualization technique is a framework to divide the resources of a computer into execution environments to make the physical machine to be productive for the resource utilization and resource management. The main importance of virtualization technique is that it supports migration of VMs from existing host machine to other physical machines (in hosts migration or between hosts migration) [22]. Virtualization technology brought technical basis in cloud computing. There exists different kind of virtualization technology used in cloud computing such as storage virtualization, server virtualization, network virtualization, client virtualization, operation framework virtualization [23]. The network virtualization is based on virtualized network switch technology commonly known as vSwitch. Client Virtualization is a client virtualization technology based on creating a client desktop as a VM called VDI (virtual desktop infrastructure). A VDI uses rack-based servers distributed across the data center (DC) with a top of rack (ToR) switches at the network edge.